+ if (IS_DF_SLOPE(element))
+ {
+ // handle special cases for slope element
+
+ if (IS_45_ANGLE(laser.current_angle))
+ {
+ int elx, ely;
+
+ elx = getLevelFromLaserX(LX);
+ ely = getLevelFromLaserY(LY);
+
+ if (IN_LEV_FIELD(elx, ely))
+ {
+ int element_next = Tile[elx][ely];
+
+ // check if slope is followed by slope with opposite orientation
+ if (IS_DF_SLOPE(element_next) && ABS(element - element_next) == 2)
+ laser.overloaded = TRUE;
+ }
+
+ int nr = element - EL_DF_SLOPE_START;
+ int dx = (nr == 0 ? (XS > 0 ? TILEX - 1 : -1) :
+ nr == 1 ? (XS > 0 ? TILEX : 1) :
+ nr == 2 ? (XS > 0 ? TILEX : 1) :
+ nr == 3 ? (XS > 0 ? TILEX - 1 : -1) : 0);
+ int dy = (nr == 0 ? (YS > 0 ? TILEY - 1 : -1) :
+ nr == 1 ? (YS > 0 ? TILEY - 1 : -1) :
+ nr == 2 ? (YS > 0 ? TILEY : 0) :
+ nr == 3 ? (YS > 0 ? TILEY : 0) : 0);
+
+ int px = ELX * TILEX + dx;
+ int py = ELY * TILEY + dy;
+
+ dx = px % TILEX;
+ dy = py % TILEY;
+
+ elx = getLevelFromLaserX(px);
+ ely = getLevelFromLaserY(py);
+
+ if (IN_LEV_FIELD(elx, ely))
+ {
+ int element_side = Tile[elx][ely];
+
+ // check if end of slope is blocked by other element
+ if (IS_WALL(element_side) || IS_WALL_CHANGING(element_side))
+ {
+ int pos = dy / MINI_TILEY * 2 + dx / MINI_TILEX;
+
+ if (element & (1 << pos))
+ laser.overloaded = TRUE;
+ }
+ else
+ {
+ int pos = getMaskFromElement(element_side);
+
+ if (mm_masks[pos][dx / 2][dx / 2] == 'X')
+ laser.overloaded = TRUE;
+ }
+ }
+ }
+ }
+